Lightweight closure



FIG. 1 is an isometric view of a lightweight closure according to our new design.

FIG. 2 is a top view of the lightweight closure of FIG. 1.

FIG. 3 is a bottom view of the lightweight closure of FIG. 1; and,

FIG. 4 is a front view of the lightweight closure of FIG. 1. The left, right, and rear views are mirror images of the front view.

The portions of the drawings appearing in broken lines are for environment only and do not form a part of the claimed design. 

The ornamental design for a lightweight closure, as shown and described. 